<!DOCTYPE html>
<html lang="zh-cn" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>pay</title>
</head>
<body>
<form th:action="@{/pay/{orderid}(orderid=${orderId})}" method="get">
    <input type="submit" th:value="'pay for ' + ${orderId}" />
</form>
</body>
</html>